90847fc881
I'm checking for zero-size allocations and assert()-ing them, so we can more easily get backtraces and debug problems, but we'll also allow -DNDEBUG people to live on the edge if they wish. We do not rely on errno when checking for OOM errors because some implementations of malloc do not set it, and malloc is commonly overridden by userspace wrappers. I've spent some time looking through the source and didn't find any obvious places where we would explicitly allocate 0 bytes, so we shouldn't trip any of those assertions. We also avoid allocating zero bytes because C libraries don't handle this consistently (some return NULL, some not); and it's dangerous either way. git-svn-id: https://svn.musicpd.org/mpd/trunk@4690 09075e82-0dd4-0310-85a5-a0d7c8717e4f
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/* the Music Player Daemon (MPD)
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* (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef AUDIO_OUTPUT_H
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#define AUDIO_OUTPUT_H
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#include "../config.h"
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#include "mpd_types.h"
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#include "audio.h"
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#include "tag.h"
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#include "conf.h"
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#include "utils.h"
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#define DISABLED_AUDIO_OUTPUT_PLUGIN(plugin) \
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AudioOutputPlugin plugin = { \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL, \
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NULL \
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};
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typedef struct _AudioOutput AudioOutput;
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typedef int (*AudioOutputTestDefaultDeviceFunc) ();
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typedef int (*AudioOutputInitDriverFunc) (AudioOutput * audioOutput,
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ConfigParam * param);
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typedef void (*AudioOutputFinishDriverFunc) (AudioOutput * audioOutput);
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typedef int (*AudioOutputOpenDeviceFunc) (AudioOutput * audioOutput);
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typedef int (*AudioOutputPlayFunc) (AudioOutput * audioOutput,
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char *playChunk, int size);
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typedef void (*AudioOutputDropBufferedAudioFunc) (AudioOutput * audioOutput);
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typedef void (*AudioOutputCloseDeviceFunc) (AudioOutput * audioOutput);
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typedef void (*AudioOutputSendMetadataFunc) (AudioOutput * audioOutput,
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MpdTag * tag);
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struct _AudioOutput {
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int open;
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char *name;
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char *type;
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AudioOutputFinishDriverFunc finishDriverFunc;
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AudioOutputOpenDeviceFunc openDeviceFunc;
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AudioOutputPlayFunc playFunc;
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AudioOutputDropBufferedAudioFunc dropBufferedAudioFunc;
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AudioOutputCloseDeviceFunc closeDeviceFunc;
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AudioOutputSendMetadataFunc sendMetdataFunc;
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int convertAudioFormat;
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AudioFormat inAudioFormat;
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AudioFormat outAudioFormat;
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AudioFormat reqAudioFormat;
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char *convBuffer;
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int convBufferLen;
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int sameInAndOutFormats;
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void *data;
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};
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typedef struct _AudioOutputPlugin {
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char *name;
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AudioOutputTestDefaultDeviceFunc testDefaultDeviceFunc;
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AudioOutputInitDriverFunc initDriverFunc;
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AudioOutputFinishDriverFunc finishDriverFunc;
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AudioOutputOpenDeviceFunc openDeviceFunc;
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AudioOutputPlayFunc playFunc;
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AudioOutputDropBufferedAudioFunc dropBufferedAudioFunc;
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AudioOutputCloseDeviceFunc closeDeviceFunc;
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AudioOutputSendMetadataFunc sendMetdataFunc;
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} AudioOutputPlugin;
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void initAudioOutputPlugins(void);
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void finishAudioOutputPlugins(void);
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void loadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin);
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void unloadAudioOutputPlugin(AudioOutputPlugin * audioOutputPlugin);
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int initAudioOutput(AudioOutput *, ConfigParam * param);
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int openAudioOutput(AudioOutput * audioOutput, AudioFormat * audioFormat);
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int playAudioOutput(AudioOutput * audioOutput, char *playChunk, int size);
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void dropBufferedAudioOutput(AudioOutput * audioOutput);
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void closeAudioOutput(AudioOutput * audioOutput);
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void finishAudioOutput(AudioOutput * audioOutput);
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int keepAudioOutputAlive(AudioOutput * audioOutput, int ms);
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void sendMetadataToAudioOutput(AudioOutput * audioOutput, MpdTag * tag);
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void printAllOutputPluginTypes(FILE * fp);
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#endif
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